The Structure of Multiloop Amplitudes in Gauge and Gravity Theories

Details The Structure of Multiloop Amplitudes in Gauge and Gravity Theories The Structure of Multiloop Amplitudes in Gauge and Gravity Theories

2010-07-25

arxiv.org/abs/1007.4297v1

Nucl.Phys.Proc.Suppl.205-206:54-60,2010

Physics

High Energy Physics

High Energy Physics - Theory

To appear in Proceedings of Loops and Legs in Quantum Field Theory, Woerlitz, Germany, April 25-30, 2010; 4 figures

Scientific paper

10.1016/j.nuclphysbps.2010.08.01

We review the recently discovered duality between color and kinematics in gauge theories. This duality leads to a remarkably simple double-copy relation between diagrammatic numerators of gravity scattering amplitudes and gauge-theory ones. We summarize nontrivial evidence that the duality and double-copy property holds to all loop orders. We also comment on other developments, including a proof that the gauge-theory duality leads to the gravity double-copy property, and the identification of gauge-theory Lagrangians whose double copies yield gravity Lagrangians.

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